Can I/we shoot my 10/22 or other rimfire rifles in the pistol section? I am going to try shooting some 25 or 50 yard iron sight targets for the monthly rimfire match while I am there.

Unless you specifically want to shoot some rimfire silhouette targets, there's not any point in going to the rimfire side anymore as they took quite a bit of the reactive targets out. Hopefully they are replacing them?
Just do all center and rimfire shooting on the rifle side No carrying stuff back and forth that way.